A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fabricated unbonded prestressed 3D printing concrete beam and construction technology thereof
The invention discloses an assembly type unbonded prestressed 3D printing concrete beam and a construction technology thereof. The assembly type unbonded prestressed 3D printing concrete beam comprises a 3D printing concrete beam base body, unbonded prestressed longitudinal ribs, unbonded prestressed vertical ribs and U-shaped nails. The U-shaped nails are arranged at intervals along the positions where the unbonded prestressed longitudinal bars are located. The 3D printing concrete beam base body is manufactured through longitudinal parallel printing, a vertical through hole channel is reserved in the position close to the beam end, and unbonded prestressed longitudinal bars extending out of the beam end are arranged at the position, where prestress needs to be arranged, of the beam body. And after the 3D printing concrete beam base body is cured to the specified strength, unbonded prestressed vertical ribs are arranged in the vertical through hole channels, and then tensioning, anchoring and grouting are conducted. The shear capacity of the component is enhanced through the unbonded prestressed vertical bars, the flexural capacity of the component is greatly improved through the unbonded prestressed longitudinal bars, the component has the advantages of being excellent in overall mechanical property, high in ductility and energy dissipation capacity and the like, and safe application and reliability of the component are guaranteed.
本发明公开了一种装配式无粘结预应力3D打印混凝土梁及其施工工艺，包括3D打印混凝土梁基体、无粘结预应力纵筋、无粘结预应力竖筋以及U型钉；U型钉沿着无粘结预应力纵筋所在处间隔设置；3D打印混凝土梁基体通过纵向平行打印制成，且在靠近梁端处预留有竖向贯通孔道，在梁体需要设置预应力的位置布置有伸出梁端的无粘结预应力纵筋；3D打印混凝土梁基体养护至规定强度后，在竖向贯通孔道中设置无粘结预应力竖筋，然后进行张拉、锚固和灌浆。本发明通过无粘结预应力竖筋增强了构件的抗剪承载力，通过无粘结预应力纵筋大大提高了构件的抗弯承载力，具有整体力学性能优良，延性和耗能能力高等优点，保证了构件的安全适用与可靠。
Fabricated unbonded prestressed 3D printing concrete beam and construction technology thereof
The invention discloses an assembly type unbonded prestressed 3D printing concrete beam and a construction technology thereof. The assembly type unbonded prestressed 3D printing concrete beam comprises a 3D printing concrete beam base body, unbonded prestressed longitudinal ribs, unbonded prestressed vertical ribs and U-shaped nails. The U-shaped nails are arranged at intervals along the positions where the unbonded prestressed longitudinal bars are located. The 3D printing concrete beam base body is manufactured through longitudinal parallel printing, a vertical through hole channel is reserved in the position close to the beam end, and unbonded prestressed longitudinal bars extending out of the beam end are arranged at the position, where prestress needs to be arranged, of the beam body. And after the 3D printing concrete beam base body is cured to the specified strength, unbonded prestressed vertical ribs are arranged in the vertical through hole channels, and then tensioning, anchoring and grouting are conducted. The shear capacity of the component is enhanced through the unbonded prestressed vertical bars, the flexural capacity of the component is greatly improved through the unbonded prestressed longitudinal bars, the component has the advantages of being excellent in overall mechanical property, high in ductility and energy dissipation capacity and the like, and safe application and reliability of the component are guaranteed.
本发明公开了一种装配式无粘结预应力3D打印混凝土梁及其施工工艺，包括3D打印混凝土梁基体、无粘结预应力纵筋、无粘结预应力竖筋以及U型钉；U型钉沿着无粘结预应力纵筋所在处间隔设置；3D打印混凝土梁基体通过纵向平行打印制成，且在靠近梁端处预留有竖向贯通孔道，在梁体需要设置预应力的位置布置有伸出梁端的无粘结预应力纵筋；3D打印混凝土梁基体养护至规定强度后，在竖向贯通孔道中设置无粘结预应力竖筋，然后进行张拉、锚固和灌浆。本发明通过无粘结预应力竖筋增强了构件的抗剪承载力，通过无粘结预应力纵筋大大提高了构件的抗弯承载力，具有整体力学性能优良，延性和耗能能力高等优点，保证了构件的安全适用与可靠。
Fabricated unbonded prestressed 3D printing concrete beam and construction technology thereof
一种装配式无粘结预应力3D打印混凝土梁及其施工工艺
YUE JIANGUANG (author) / YANG ZONGYI (author) / WU YAO (author) / TAO JINJU (author) / SONG CHENGWEI (author)
2022-12-23
Patent
Electronic Resource
Chinese
IPC:
E04G
SCAFFOLDING
,
Baugerüste
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
/
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
| European Patent Office | 2021
Unbonded Prestressed Concrete Design Characteristics and Construction Technology
| Trans Tech Publications | 2014
Unbonded prestressed concrete structure beam plate punching method
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NOVEL UNBONDED ANNULAR ANCHOR PRESTRESSED CONCRETE LINING AND CONSTRUCTION METHOD THEREOF
| European Patent Office | 2021